Pneumatic sending valve



April 2, 1935. 1 N. HAMPTON Er AL .71,996,107 l PNEUMATIC SENDING VALVE A Filed July 29, 1932 F/GJ /NVE/vTo/es; 5%'. By S, 91( a c A T TORNE Y Thisv invention `relates to pneumaticticket distributionsystems and more particularly fto,r a type ofjsending valve usecLin-.such systems.: is'

The l.object Vof this inventioni'islto improve .A featurer-of the invention is :the Aprovisionof afmechanism whereby a pressure exertedlon a` bar is.v eiective to operate the valve4 preparatory tofthe introduction of the ticket Vinthepneumatie'tube. v f

. Another feature is .the :provision .ofv Ya frame detachable: from abase vwhichisfin turn', per.;4 manently soldered" to the pneumatic .-tube, the.

base" serving as a seatand support for the valve. This arrangement or" partsl'greatly facilitatesthe machiningrof the base fand-:.the'adjustment oi .the

valve on its 'seatwhile correspondingly decreas'4 ing the manufacturing cost of the apparatusLwi Another feature .is thelfp'rovision of a rack or grid .element formed Withthe frame whereby lthe air is drawninto the pneumatic tube from both' sides of the ticket in order to Afacilitateits en'- trance into the tube, the rack also serving for guiding the ticket toward the valve and reducing the liability of foreign particles entering the tube with the consequent stopping of the tickets while in transit therein. Y

Fig. 1 is a top assembly View; r

Fig. 2 is a side View with portions of. they frame cut away and showing the valve in the open poi-'- sition;

Fig. 3is'a .side view showing rthe frame removed from the baseand the valve inthe closed position; and y Fig. 4 is a diagrammatical view of a circuitand the air inlet adjusting mechanism controlled by the operation of the valve. v *i In the drawing, I0 indicatesa metallic tube on whichr a base II is permanently secured as by soldering. The base is formed with bearing portions I2 and `I3 shown in Fig. l for supporting a shaft I4 on Whichfa'valve I5is'pivoted.

On the under surface of valve I5 is mounted a pad I8 which is preferably'made of relatively soft material such as rubber, held securely thereon by a metallic strip I9 andscrews 20 and 2I, shown in Figs. l and 2. The undersurface of pad I8 fits the topv surface of'base II which is accuratelymachined to form a -seat for the pad I8 provided for'closing registering apertures I6 and I'I in the basel I and tube I0, respectively.

The valve I5 is provided with a plate .22 loosely fitted between lugs 2 3 and 24 and yheld in place by a spring 25 having one end abutting the headL of a stud 26r secured to the valve I5 as by riveting.

' 5. construction andope'ration of such avalve.: permitting the disengagemento ir-i'fadju'sted position Yby. a

shaped' levenmemb'er 36? -30 of plate 22'.

The plate has a 'hook-shaped; bearinglgportion PATE ,10F

. .L 1,996.1011- I PNEUMA'rrosENnINGCVALvE k.

Leon NQHmptn, NewryoiigN.' Y., aneoygina j. i "Nt Giertsemloomeld, N..Lgjassignrors:toBell'V o j n' Telephone Laboratories,` Incorporated, .York, N. Y., acorporationof New York Apielliti'on .my 29 wfzrserialf 'aile-claims.' (ola. soz'ff 21-whichicooperatswith a'luglporti'onl formed y the shaft .I 4 and thereby the reinov lof thewalve with an upwardly extending arm 234 in detail; ...y p

lFrame',:i3-has oppositel'r disposed notches AV34,- Qneofthem-shpwniiirr f the iugsflzcangi fts, te this fran'iebn Itheb'ase shoulder.' screws 14a andi.

tending in operable relation with a stud 38 carried by an upwardlyextending ange portion 39 formed With the :valve I5. The-lever v3Ii Aand valve I5 are jheld infthe unoperated :position through the weight of valve I5 and the tension of contact spring'3l bearing against'the stud 'y by screws 50 and 5I and the 'movement of this lever is effective to engage and actuate the valve i i5 from the lclosed position asshown in Fig. 3

to the position shown in Fig. 2 to permit the entrance of the ticket T in the tube I0. Theundersurface or bearing portion *of` frame'33 registers with theconfiguration of base II as shown Abar 42 issecured to'levery 36 in Figs. 2 and 3 and a rack portion whichv is formed of a plurality of obliquely disposed bars 43', 44 and 45 Vis provided for receiving theticket T preparatory to the opening 'of the valve I5 and to permit the air to `enter the valve in the tube from both sides of the ticket; the-operation of vvalve I5 simultaneously closing springs 3| and 32.r

As shown in Fig. 4 on the inlet end ofvtube Il) is mounted a solenoid v46` provided for actuvating a valve in the form of a flap -member 41W- against the resistance of a'spring `48, the ten- Y sionof whichv is controlledv throughthe turning movement of a screw 49 for adjustingrthe air flowin the tube. Upon the energization of `sole'-vf noid Il@ the flap il is moved in line parallel to the direction of the tube thus decreasingthe rre-V sistance of theA air flow throughthe'tube andv thereby compensating for the air drawn in anyl K In atypical 'examplejrofthe operation of this. device, the operator places theY ticket T,to..be

sent .through the tube .I0 `upon the rack bars 43, 44 andV v45 4and simultaneously I imparts a down- Y ward motion `to `the lever` 36 for opening the Vifio.

f Y fords the maximumk of convenience to theopera- V`valve lithrough theengageinent ofarm 31 with Vstud `3llthus1causing the air to cross through ftheVY airpaths formed by the bars'143, 44v and 5to indicated by the arrows in Fig. 2.y ticket -is then drawn intothe tube I0A throughV the .cori- J'oint action of the air flow on its lsides andthe bar 3B released for closing the vf'ilve.,Vj The closing ofsprings 3| and 32 causes thefenergization of magnet `46 through the circuitjshown Aforactuating 'the Y ap 'member Vlll for decreasing the; l resistance ofg the t air blowat that pc'iintandk thereby compensating .for the airdravvni in the j tube from any'nurnberl of valves ,whichmay bef foperated" atthe. `same time Lthus assuring the A positiveentranee of thejtickets any-of 'these valveswhich'are disposed nearest to the air inlet .thefus'e of. .onlyfone` handto convenientlvandv operation isf effected by 'simply 'placing the ticket onto the "rackgforrnedfbyjthe.bars 43;;44 'andl 45V and .operating the 1 bar- 42,v for'opening; the.r

valve.;Y These'gbars permitegtheaairzto enter the'` J-'r'tubefroniboth'sides ofv the ticket'which thereby drawn into "the tube ,and eectively .prevented *1 l g I tedthat through? ,K Lv this.arrangement of v*parts itis'possible for thev 'operators either at theleft or Vright vpositionV with;

1,996,101 K K g Y tors and correspondinglyfe'ects a great saving of time in the dispatching operation o1' such tickets.

Whatisclaimedis: l p

1. In Va ticket sending valve, thecombination with a pneumatic tube, a base soldered tosaid tube, theA tube and .said baseV havingV registering openingsqaf valve vs'uppgor,tg'edgby,saidA base normally closing saidV opening,v airame mounted on .Q Y Y said baseY having an obliquely` disposed-rack exenter the'tubeircm both sides of the ticket as i` tendingmadjacenti theY front edge of saidv valve Vfor guiding Athe ticket toward the opening inf said base, a studcarried bysaid valve and extending through anppening Vin'vsaid framera manually operable bar-.pivoted on said frame having an arm engaging saidstud foroperating said valve,

ingu ignsaid tubel .Said rack permitting the' VairV to enter the pneu'- matic tube'from both sidesoi the ticket for draw- 'with a Apjneumatic.v tubelhaarvingV an opening, a

base Welded -to1 vvsaidjltube and `having aseat and an opening/registering kwith'fthe` openingA voi. said ing saidbase and a' pluralityr of.. obliquelyV dis-V` posedv K bars; extending" Ytovvard said vopenings vfor y receivingi the ticket,1V said 'gbarrs' `forming a `pluralityV oi airf paths` for 'permitting the Y flow y oiffair" toY pass thereacrossrl the`r imp ing'e on.the` vunder surface ofi the ticket `in .conjunction gwith; the

drawing'it' into: said tubeuponfthe Aoperation of.

said valve, means for securing saidV -frame 1bn,v

said.- base' and va' manually.*openiableV levermecha- Ynisfm.:mounted on: said1frame,:fsaid,mechanism A I permittingthe operation vpoi"said'valve simulta-j y neously Y. with barsg...

f LON'N. HAMPTON.

ow oi air ionthe -topY surface ofgthe ticket i'orf 

